CN116696878A - Low-power-consumption driving type water-based proportional valve pilot control valve group - Google Patents
Low-power-consumption driving type water-based proportional valve pilot control valve group Download PDFInfo
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- CN116696878A CN116696878A CN202310871563.7A CN202310871563A CN116696878A CN 116696878 A CN116696878 A CN 116696878A CN 202310871563 A CN202310871563 A CN 202310871563A CN 116696878 A CN116696878 A CN 116696878A
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- proportional valve
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 117
- 230000003321 amplification Effects 0.000 claims abstract description 25
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims description 31
- 238000005065 mining Methods 0.000 claims description 21
- 230000005389 magnetism Effects 0.000 claims description 15
- 230000003068 static effect Effects 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 5
- 238000007885 magnetic separation Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 5
- 230000010354 integration Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000005457 optimization Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/004—Cartridge valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The application discloses a low-power-consumption driving type water-based proportional valve pilot control valve group, which comprises a valve body assembly, a two-position two-way proportional valve, a two-position three-way switch valve and an electronic control unit. The application realizes manual/electromagnetic control of the pilot control valve group switch working port and electromagnetic proportional control of the proportional working port through methods of double-coil driving, lever amplification, liquid path optimization, valve group integration and the like. The pilot stage control system solves the problem of pilot stage control of a high-water-base hydraulic system in a coal mine and low-power-consumption driving under the intrinsically safe power supply condition, and provides a pilot stage solution for a main valve of a high-pressure and high-flow proportional valve of a hydraulic support. The application has the characteristics of compact structure, rich functions, intrinsic safety driving, easy intelligent control and the like.
Description
Technical Field
The application relates to the technical field of hydraulic control, in particular to a low-power-consumption driving type water-based proportional valve pilot control valve bank.
Background
Coal is the main primary energy source in China, 70% of the coal yield in China is exploited by fully mechanized mining equipment, each working face consists of 100-200 hydraulic supports to form a huge supporting equipment group, the electrohydraulic reversing valves are electrohydraulic control elements of the support cores, and the control valve group of each support is integrated with up to 10-20 electrohydraulic reversing valves. At present, a switch-type reversing valve is adopted underground, the valve port flow cannot be controllably regulated, the development requirements of the intelligent and unmanned hydraulic support are difficult to meet, and upgrading the switch-type electrohydraulic control valve of the hydraulic support of the coal mine into a proportional directional valve is an important guarantee for realizing the intelligent support and unmanned fully mechanized mining face.
The underground hydraulic support system has special working conditions of high pressure, large flow, high dust, low viscosity medium, intrinsic safety power supply and the like, the authorized bulletin No. CN111894924B, the manual-automatic control high-water-base high-pressure large-flow digital proportional direction valve can meet the use requirements of the underground hydraulic support in the aspects of main valve function, pollution resistance, medium use and the like, but the pilot stage part adopts a high-speed switch valve for control, the high-speed switch valve is larger in driving current for meeting the high response characteristic and is difficult to meet the support power supply requirement. The support proportional directional valve is required to have a manual switch and an electrohydraulic proportional control function, so that a pilot stage needs to be integrated with manual operation and has proportional adjustment capability, and meanwhile, the support proportional directional valve also needs to be suitable for a support intrinsic safety power supply system.
The application aims to provide a low-power-consumption driving type water-based large-flow proportional valve pilot control valve bank, which is used for solving the problem that the existing high-water-based pilot valve bank cannot meet the requirements of integrated manual operation, proportional adjustment control and support intrinsic safety power supply system at the same time.
Disclosure of Invention
The application aims to provide a low-power-consumption driving type water-based proportional valve pilot control valve bank so as to solve the problems in the prior art.
In order to achieve the above purpose, the application provides a low-power-consumption driving type water-based proportional valve pilot control valve group, which comprises a valve body assembly, a two-position two-way proportional valve, a two-position three-way switch valve and an electronic control unit;
the valve body assembly comprises a valve body, a plug end cover, a liquid distribution plate assembly, a ball plug and a lever cavity end cover; the ball plug is arranged on the side surface and the bottom surface of the valve body, the lever cavity end cover and the plug end cover are connected to the valve body through bolts, and the liquid distribution plate assembly is embedded in the valve body; the two-position three-way switch valve and the two-position two-way proportional valve are respectively inserted and installed on two sides of the valve body and are limited through the lever cavity end cover; the middle part of the valve body is provided with a containing cavity u, and the electronic control unit is packaged and arranged in the containing cavity u through the plug end cover; and the two-position three-way switch valve and the two-position two-way proportional valve are electrically connected with the electronic control unit.
Preferably, the valve body is provided with 2 liquid inlets P1 and P2,2 working ports A and B and 1 liquid return port R; the 2 liquid inlets P1 and P2 are respectively communicated with the liquid inlets of the two-position two-way proportional valve and the two-position three-way switch valve; the 2 working ports A, B are respectively communicated with the working ports of the two-position three-way switch valve and the two-position two-way proportional valve, and the liquid return port R is communicated with the liquid return port of the two-position three-way switch valve; and the working ports A and B and the liquid return port R are provided with O-shaped sealing rings.
Preferably, a proportional lever cavity v and a switch lever cavity w are arranged on the lever cavity end cover, a sealing groove is formed in the lever cavity end cover, the sealing groove is arranged along the circumferential direction of the proportional lever cavity v, an ED sealing ring is arranged in the sealing groove, and the lever cavity end cover and the valve body are sealed through the ED sealing ring.
Preferably, the liquid distribution plate assembly comprises a liquid distribution plate valve body, 2 fixed liquid resistances, a ball plug and an O-shaped sealing ring; the 2 fixed liquid resistances are respectively fixed liquid resistances of a liquid inlet of the switch valve and a liquid inlet of the proportional valve, and the 2 fixed liquid resistances are all embedded in the liquid distribution plate valve; the fixed liquid resistance of the liquid inlet of the switch valve is communicated with the liquid inlet P2, and the fixed liquid resistance of the liquid inlet of the proportional valve is communicated with the liquid inlet P1; the ball plug is arranged on one side of the liquid distribution plate valve body, the bottom end of the liquid distribution plate valve body is provided with a liquid inlet P, and the liquid inlet P is sealed through the O-shaped sealing ring.
Preferably, the two-position three-way switch valve comprises a two-position three-way valve core assembly, a switch amplifying lever assembly and a mining book An Kaiguan electromagnet; the mining intrinsic safety switch electromagnet and the two-position three-way valve core assembly are inserted into the valve body in the same direction, and the central axis of the mining intrinsic safety switch electromagnet and the central axis of the two-position three-way valve core assembly are both positioned in the same vertical plane; the mining intrinsic safety switch electromagnet is a dry electromagnet and is provided with a manual operation button.
Preferably, the amplification ratio of the switch amplification lever assembly is 10:1, and the switch amplification lever assembly comprises a switch amplification lever, a rotation pin sleeve, a rotation pin and an adjusting screw; the switch amplifying lever is rotatably mounted on the valve body through the rotating pin, the switch amplifying lever is arranged in the switch lever cavity w, a fulcrum of the switch amplifying lever is located between two stress points, and the two stress points of the switch amplifying lever are respectively arranged corresponding to the mining intrinsic safety switch electromagnet and the two-position three-way valve core assembly.
Preferably, the two-position two-way proportional valve comprises a proportional valve core assembly, a proportional amplifying lever assembly and a low-power consumption proportional electromagnet; the low-power-consumption proportional electromagnet and the proportional valve core assembly are inserted in the valve body in the same direction, and the central axis of the low-power-consumption proportional electromagnet and the central axis of the proportional valve core assembly are located in the same vertical plane.
Preferably, the low-power-consumption proportional electromagnet is a wet electromagnet, and is driven by two groups of armature electromagnetic coils; the low-power consumption proportion electromagnet comprises a pole shoe, a coil framework, a limiting piece, an armature, an electromagnetic push rod, a magnetism isolating ring, a pressure-resistant guide sleeve, an electromagnetic coil, a magnetism isolating plate, an adjusting spring, an adjusting screw and an O-shaped static seal; the two groups of armature electromagnetic coils are separated by the magnetic separation plate; the magnetism isolating rings are respectively welded in the pressure-resistant guide sleeve; the armatures are respectively arranged in armature accommodating cavities e/f in the middle of the pressure-resistant guide sleeve, the armatures are of a ladder structure, and the armatures are connected with the electromagnetic push rod through threads; one end of the electromagnetic push rod is connected with the proportional amplifying lever assembly, and the other end of the electromagnetic push rod is connected with the adjusting spring; the adjusting spring is fixed through a boss of the electromagnetic push rod and a groove in the adjusting screw; the pole shoe, the pressure-resistant guide sleeve and the magnetism isolating plate are welded and connected.
Preferably, the amplification ratio of the proportional amplification lever assembly is 5:1, and the proportional amplification lever assembly comprises a proportional amplification lever, a rotary pin sleeve, a rotary pin and an adjusting screw; the proportional amplifying lever is rotatably mounted on the valve body through the rotating pin, the proportional amplifying lever is arranged in the switch lever cavity v, a fulcrum of the proportional amplifying lever is positioned between two stress points, and the two stress points of the proportional amplifying lever are respectively arranged corresponding to the proportional valve core assembly and the electromagnetic push rod; the end surface of the electromagnetic push rod, which is in contact with the proportional amplifying lever, is a spherical surface.
Preferably, the proportional valve core assembly comprises a proportional valve sleeve, a reset spring, a proportional valve core, a proportional valve seat, a dynamic seal and a plurality of static seals; the proportional valve core is arranged in a cavity formed by the proportional valve seat and the proportional valve sleeve, the reset spring is arranged between the proportional valve core and the proportional valve sleeve, and the reset spring is installed and positioned through a boss of the proportional valve core and a blind hole of the proportional valve sleeve;
the proportional valve sleeve is matched with the valve body to form a liquid supply containing cavity x; the proportional valve seat, the proportional valve core and the proportional valve sleeve are matched to form a liquid inlet containing cavity s; the containing cavity where the return spring is located is a spring cavity y; the proportional valve core and the proportional valve seat are matched to form 2 containing cavities, namely a leftmost push rod cavity z and a middle containing cavity t, and the containing cavity t is communicated with a working port B; working fluid of the low-power-consumption proportional electromagnet is filled in the armature accommodating cavity e/f through the liquid inlet P1, the accommodating cavity x, the runner i, the proportional lever cavity v and the runners m and n; the liquid inlet P1 is communicated with the liquid supply containing cavity x, the liquid inlet containing cavity s, the spring cavity y, the proportional lever cavity v and the push rod cavity z through the flow channel k, the flow channel h, the flow channel i and the flow channel j.
Compared with the prior art, the application has the following advantages and technical effects:
1) The problem that the proportional valve in the patent CN111894924B does not have an intrinsic safety type pilot valve is solved, and proportional control of the bracket hydraulic cylinder can be realized by matching with the main valve of the patent CN 111894924B.
2) The power supply device solves the defect of insufficient output force of the intrinsic safety proportional electric-mechanical conversion device, adopts double electromagnetic coils for low-power-consumption driving, overcomes the heating problem on the premise of limiting the maximum driving current, ensures the output of driving force and meets the driving requirement of a proportional valve under an intrinsic safety power supply.
3) The proportional valve core component is designed through a flow channel, and the acting cavities (the spring cavity, the push rod cavity and the proportional lever cavity are communicated) at two ends of the valve core are communicated, so that the static pressure balance problem of the valve core in a high-pressure state is solved, the axial driving force is reduced, and the driving force requirement on the electric-mechanical conversion device is effectively reduced.
4) The push rod cavity of the proportional valve core assembly is communicated with the proportional lever cavity, so that the number of dynamic sealing rings is reduced, the whole valve core is only provided with one dynamic seal, the influence of friction nonlinearity of the sealing rings is reduced, and the control difficulty is effectively reduced.
5) The sliding fit part of the armature and the guide sleeve of the low-power-consumption proportional electromagnet is designed into two protruding shaft shoulders, so that the sliding contact area is reduced; the proportional lever adopts a spherical point contact design, so that the energy loss caused by sliding friction is reduced, and the smoothness of the lever when the lever is pushed horizontally is improved; the proportion electromagnet adopts a wet electromagnet, and the working medium plays a role in lubricating the movement of the armature.
6) The valve group is integrally of an inserting structure, the proportional amplifying lever and the switch amplifying lever are arranged in the same direction, the volume of the valve body is integrally reduced, and the valve group is more suitable for underground tight installation space of a coal mine. The valve group is connected with the main valve by adopting a cover plate connection mode and is arranged on the main valve body through a screw.
7) The valve core assembly and the electromagnet assembly are in modularized design, so that the valve core assembly is convenient to detach, replace, maintain and install.
8) Two electromagnets are adopted to respectively control two valve cores, two working ports of the valve bank are mutually independent, and the states of the two working ports can be simultaneously and cooperatively controlled by the electronic control unit, so that the use functions of the valve bank are enriched.
9) The electronic control unit can superimpose an algorithm to improve the control precision of the valve core, for example, the influence of armature friction nonlinearity is reduced by superimposing a vibration signal (PWM signal); aiming at the hysteresis phenomenon of the proportional electromagnet, the output thrust of the electromagnet is approximately in a linear state by measuring a hysteresis characteristic curve between the force and the voltage of the electromagnet and applying time-varying correction voltage according to an input signal and the differentiation of the input signal.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an overall three-dimensional isometric view of a pilot control valve set of a low-power-consumption driving water-based proportional valve;
FIG. 2 is a schematic diagram of a three-dimensional structure of a pilot control valve bank of the low-power-consumption driving water-based proportional valve;
FIG. 3 is a schematic diagram of a valve body assembly of a pilot control valve block of a low-power-consumption driving water-based proportional valve;
FIG. 4 is a layout of liquid distribution holes at the bottom of a valve body of a pilot control valve bank of the low-power-consumption driving water-based proportional valve;
FIG. 5 is a schematic diagram of the liquid distribution plate assembly of the pilot control valve of the low-power-consumption driving water-based proportional valve;
FIG. 6 is a two-dimensional structure schematic diagram of a two-position three-way switching valve of a pilot control valve group of a low-power-consumption driving water-based proportional valve;
FIG. 7 is a two-dimensional structural illustration of a two-position two-way proportional valve of a pilot control valve group of a low-power-consumption driving water-based proportional valve;
FIG. 8 is a two-dimensional structural illustration of a valve core assembly of the two-position two-way proportional valve of the pilot control valve group of the low-power-consumption driving water-based proportional valve;
FIG. 9 is a schematic diagram of the hydraulic circuit of the pilot control valve set of the low-power-consumption driving water-based proportional valve;
FIG. 10 is a schematic diagram of a control loop of the pilot control valve set of the low-power-consumption driving water-based proportional valve applied to a main valve of a patent CN 111894924B;
FIG. 11 is a schematic diagram of a precise control scheme of a proportional electromagnet of a pilot control valve group of a low-power-consumption driving water-based proportional valve;
wherein: the valve body assembly 1, the two-position two-way proportional valve 2, the two-position three-way valve 3, the electronic control unit 4, the ED sealing ring 5, the valve body 6, the plug end cover 7, the liquid distribution plate assembly 8, the ball plug 9, the O-shaped sealing ring 10, the lever cavity end cover 11, the switch valve liquid inlet fixed liquid resistance 12, the proportional valve liquid inlet fixed liquid resistance 13, the liquid distribution plate valve body 14, the ball plug 15, the O-shaped sealing ring 16, the two-position three-way valve core assembly 17, the mining intrinsic safety switch electromagnet 18, the manual operation button 19, the switch amplifying lever assembly 20, the adjusting screw 21, the rotating pin 22, the rotating pin sleeve 23, the switch amplifying lever 24, the proportional amplifying lever assembly 25, the proportional valve core assembly 26, the pole shoes 27/36, the O-shaped static seal 28, the coil frame 29/37, the limiting piece 30, the magnetism isolating ring 31/38, the armature 32/41, the electromagnetic coil 33/39, the pressure-proof guide sleeve 34/40, the magnetism isolating plate 35, the adjusting spring 42, the adjusting screw 43, the electromagnetic push rod 44, the adjusting screw 45, the rotating pin sleeve 46, the rotating pin 47, the proportional amplifying lever 50, the proportional valve seat 50, the valve seat 51, the valve seat 54 and the valve seat 54.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art without the inventive effort, are intended to be within the scope of the present application. The application will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1-3, the application provides a low-power-consumption driving type water-based proportional valve pilot control valve group, which comprises a valve body assembly 1, a two-position two-way proportional valve 2, a two-position three-way switch valve 3 and an electronic control unit 4;
the valve body assembly 1 comprises a valve body 6, a plug end cover 7, a liquid distribution plate assembly 8, a ball plug 9 and a lever cavity end cover 11; the ball plug 9 is arranged on the side surface and the bottom surface of the valve body 6, the lever cavity end cover 11 and the plug end cover 7 are connected to the valve body 6 through bolts, and the liquid distribution plate assembly 8 is embedded in the valve body 6; the two-position three-way switch valve 3 and the two-position two-way proportional valve 2 are respectively inserted and installed on two sides of the valve body 6 and are limited through the end cover 11 of the lever cavity, the two-position three-way switch valve is generally arranged left and right, the electromagnet is arranged above, and the valve core is arranged below. The middle part of the valve body 6 is provided with a containing cavity u, and the electronic control unit 4 is encapsulated in the containing cavity u through a plug end cover 7; the electromagnets in the two-position three-way switch valve 3 and the two-position two-way proportional valve 2 are electrically connected with the electronic control unit 4, and the electronic control unit 4 is provided with a four-core aviation plug, so that the four-core aviation plug is convenient to install and detach.
Referring to fig. 3-5, the valve body 6 is provided with 2 liquid inlets P1 and P2,2 working ports a and B, and 1 liquid return port R; the 2 liquid inlets P1 and P2 are respectively communicated with liquid inlets of the two-position two-way proportional valve 2 and the two-position three-way switch valve 3; the 2 working ports A, B are respectively communicated with the working ports of the two-position three-way switch valve 3 and the two-position two-way proportional valve 2, and the liquid return port R is communicated with the liquid return port of the two-position three-way switch valve 3; the working ports A and B and the liquid return port R are provided with O-shaped sealing rings 10.
The lever cavity end cover 11 is provided with a proportional lever cavity v and a switch lever cavity w, the lever cavity end cover 11 is provided with a sealing groove, the sealing groove is arranged along the circumferential direction of the proportional lever cavity v, the ED sealing ring 5 is arranged in the sealing groove, and the lever cavity end cover 11 and the valve body 6 are sealed through the ED sealing ring 5, so that the proportional lever cavity v and the switch lever cavity w are not communicated with each other.
The liquid distribution plate assembly 8 comprises a liquid distribution plate valve body 14, 2 fixed liquid resistors, a ball plug 15 and an O-shaped sealing ring 16; the 2 fixed liquid resistances are respectively a liquid inlet fixed liquid resistance 12 of the switch valve and a liquid inlet fixed liquid resistance 13 of the proportional valve, and the 2 fixed liquid resistances are embedded and installed in the liquid distribution plate valve body 14; the liquid inlet fixed liquid resistance 12 of the switch valve is communicated with the liquid inlet P2, and the liquid inlet fixed liquid resistance 13 of the proportional valve is communicated with the liquid inlet P1; the ball plug 15 is installed on one side of the liquid distribution plate valve body 14, and a liquid inlet P is formed in the bottom end of the liquid distribution plate valve body 14 and is sealed through an O-shaped sealing ring 16.
Referring to fig. 6, the two-position three-way switch valve 3 comprises a two-position three-way valve core assembly 17, a switch amplifying lever assembly 20 and a mining intrinsic safety switch electromagnet 18; the mining intrinsic safety switch electromagnet 18 and the two-position three-way valve core assembly 17 are inserted into the valve body 6 in the same direction, and the central axis of the mining intrinsic safety switch electromagnet 18 and the central axis of the two-position three-way valve core assembly 17 are positioned in the same vertical plane; the mining intrinsic safety switch electromagnet 18 is a dry electromagnet, working medium does not exist in the switch lever cavity w during working, the mining intrinsic safety switch electromagnet 18 is provided with a manual operation button 19, and the switching action of the electromagnet 18 can be controlled through manual operation.
The amplification ratio of the switch amplification lever assembly 20 is 10:1, and the switch amplification lever assembly 20 comprises a switch amplification lever 24, a rotation pin sleeve 23, a rotation pin 22 and an adjusting screw 21; the switch amplifying lever 24 is rotatably mounted on the valve body 6 through the rotating pin 22, the switch amplifying lever 24 is arranged in the switch lever cavity w, a fulcrum of the switch amplifying lever 24 is positioned between two stress points, and the two stress points of the switch amplifying lever 24 are respectively arranged corresponding to the mining intrinsic safety switch electromagnet 18 and the two-position three-way valve core assembly 17. The output acting force of the mining intrinsic safety switch electromagnet 18 is amplified through the switch amplifying lever 24, so that the ball valve is driven to act, and the reversing is finished.
Referring to fig. 7 and 8, the two-position two-way proportional valve 2 includes a proportional valve element assembly 26, a proportional amplifying lever assembly 25, and a low-power proportional electromagnet; the low-power-consumption proportional electromagnet and the proportional valve core assembly 26 are inserted in the valve body 6 in the same direction, and the central axis of the low-power-consumption proportional electromagnet and the central axis of the proportional valve core assembly 26 are located in the same vertical plane.
The low-power-consumption proportional electromagnet is driven by two groups of armatures/electromagnetic coils; the low-power consumption proportional electromagnet comprises pole shoes 27/36, coil frameworks 29/37, limit plates 30, armatures 32/41, electromagnetic push rods 44, magnetism isolating rings 31/38, pressure-resistant guide sleeves 34/40, electromagnetic coils 33/39, magnetism isolating plates 35, adjusting springs 42, adjusting screws 43 and O-shaped static seals 28; the two sets of armatures/solenoids are separated by a magnetic separator 35; the magnetism isolating rings 31/38 are respectively welded in the pressure-resistant guide sleeves 34/40; the armature 32/41 is respectively arranged in the armature accommodating cavity e/f in the middle of the pressure-resistant guide sleeve 34/40, the armature 32/41 is of a stepped structure, the friction contact area between the armature 32/41 and the pressure-resistant guide sleeve 34/40 is reduced, and the armature 32/41 is connected with the electromagnetic push rod 44 through threads; one end of an electromagnetic push rod 44 is connected with the proportional amplifying lever assembly 25, and the other end of the electromagnetic push rod 44 is connected with the adjusting spring 42; the adjusting spring 42 is fixed through a boss of the electromagnetic push rod 44 and a groove inside the adjusting screw 43; the pole shoes 27/36, the pressure-resistant guide sleeve 34/40 and the magnetism isolating plate 35 are welded and connected to ensure reliable sealing.
The amplification ratio of the proportional amplification lever assembly 25 is 5:1, and the proportional amplification lever assembly 25 comprises a proportional amplification lever 48, a rotary pin sleeve 46, a rotary pin 47 and an adjusting screw 45; the proportional amplifying lever 48 is rotatably mounted on the valve body 6 through a rotating pin 47, the proportional amplifying lever 48 is arranged in the switch lever cavity v, a fulcrum of the proportional amplifying lever 48 is positioned between two stress points, and the two stress points of the proportional amplifying lever 48 are respectively arranged corresponding to the proportional valve core assembly 26 and the electromagnetic push rod 44; the end surface of the electromagnetic push rod 44 contacted with the proportional amplifying lever 48 is a spherical surface, and the contact point is a point contact, so that the sliding displacement friction force generated when the lever 25 is pushed to move is reduced.
The proportional valve core assembly 26 comprises a proportional valve sleeve 53, a return spring 52, a proportional valve core 50, a proportional valve seat 49, a dynamic seal 51 and a plurality of static seals 54; the proportional valve core 50 is arranged in a cavity formed by the proportional valve seat 49 and the proportional valve sleeve 53, the return spring 52 is arranged between the proportional valve core 50 and the proportional valve sleeve 53, and the return spring 52 is installed and positioned through a boss of the proportional valve core 50 and a blind hole of the proportional valve sleeve 53; the proportional valve sleeve 53 is matched with the valve body 6 to form a liquid supply containing cavity x; the proportional valve seat 49, the proportional valve core 50 and the proportional valve sleeve 53 are matched to form a liquid inlet containing cavity s; the containing cavity where the return spring 52 is located is a spring cavity y; the proportional valve core 50 and the proportional valve seat 49 are matched to form 2 containing cavities, namely a leftmost push rod cavity z and a middle containing cavity t, and the containing cavity t is communicated with the working port B; the liquid inlet P1 is communicated with the liquid supply containing cavity x, the liquid inlet containing cavity s, the spring cavity y, the proportional lever cavity v and the push rod cavity z through the flow channel k, the flow channel h, the flow channel i and the flow channel j, so that the high-pressure static pressure of the proportional valve core 50 is balanced, and the valve port can be opened only by overcoming the spring force; the cone angle of the proportional valve core 50 is 20 degrees, the cone angle of the proportional valve seat 49 is 90 degrees, the stroke of the proportional valve core is 0.9mm, and the cone surface arranged on the proportional valve core 50 is matched with the proportional valve seat 49 to form valve port linear seal, so that the valve port sealing performance in a low-viscosity high-water-based medium environment is effectively met. The low-power consumption proportional electromagnet outputs linear thrust according to the input signal, acts on the proportional valve core 50 after passing through the proportional amplifying lever 25, and further controls the opening of the valve port.
The low-power-consumption proportional electromagnet is a wet electromagnet, and the working fluid of the low-power-consumption proportional electromagnet is filled in the armature accommodating cavity e/f through the liquid inlet P1, the accommodating cavity x, the flow channel i, the proportional lever cavity v and the flow channels m and n; the armature 32/41 and the electromagnetic push rod 44 are completely immersed in the working fluid, the armature 32/41 and the electromagnetic push rod 44 are not subjected to the action of static pressure when in operation, the movement resistance is reduced, and meanwhile, the working fluid also has a lubricating effect on the movement of the armature 32/41. The coils 33/39 are simultaneously controlled by the same signal, when the same signal is input, the coils 33/39 generate the same magnetic field at the same time, the magnetism isolating plate 35 is made of non-magnetic conductive materials, and the two magnetic fields are isolated, so that the magnetic field loss is reduced, and the energy conversion efficiency of the electric-magnetic-mechanical energy is improved.
Referring to fig. 9, the low-power-consumption driving type water-based proportional valve pilot control valve bank provided by the application is provided with a liquid supply port P, a liquid return port R and working ports a and B. The valve group can realize manual switching and liquid supply of an A port, electromagnetic switching and liquid supply of an A port and electromagnetic proportional liquid supply of an B port; the port A and the port B can be controlled independently, namely, the port A and the port B can be opened independently or simultaneously.
Referring to fig. 10, the pilot control valve set of the low-power-consumption driving water-based proportional valve provided by the application can be applied to pilot control of a main valve of patent CN111894924B, is installed on the main valve in a cover plate installation mode, and can realize manual on-off control and electrohydraulic proportional control of the main valve by applying proper signals to the pilot control valve set.
Referring to fig. 11, the electronic control unit 4 can control the two electromagnets to act according to a control program. In order to improve the control precision of the proportional electromagnet, the influence of armature friction nonlinearity is reduced by adopting a mode of superposing a vibration signal (PWM signal); aiming at the hysteresis phenomenon of the proportional electromagnet, the output thrust F of the electromagnet is approximately in a linear state by measuring a hysteresis characteristic curve between the force and the voltage of the electromagnet and applying a time-varying correction voltage Deltau according to an input signal U and a differential DeltaU thereof.
The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims (10)
1. The pilot control valve bank of the low-power-consumption driving water-based proportional valve is characterized by comprising a valve body assembly (1), a two-position two-way proportional valve (2), a two-position three-way switch valve (3) and an electronic control unit (4);
the valve body assembly (1) comprises a valve body (6), a plug end cover (7), a liquid distribution plate assembly (8), a ball plug (9) and a lever cavity end cover (11); the ball plug (9) is arranged on the side surface and the bottom surface of the valve body (6), the lever cavity end cover (11) and the plug end cover (7) are connected to the valve body (6) through bolts, and the liquid distribution plate assembly (8) is embedded in the valve body (6); the two-position three-way switch valve (3) and the two-position two-way proportional valve (2) are respectively inserted and installed on two sides of the valve body (6) and are limited through the lever cavity end cover (11); the middle part of the valve body (6) is provided with a containing cavity u, and the electronic control unit (4) is encapsulated in the containing cavity u through the plug end cover (7); the two-position three-way switch valve (3) and the two-position two-way proportional valve (2) are electrically connected with the electronic control unit (4).
2. The pilot control valve group of the low-power-consumption driving type water-based proportional valve according to claim 1, wherein the valve body (6) is provided with 2 liquid inlets P1 and P2,2 working ports A and B and 1 liquid return port R; the 2 liquid inlets P1 and P2 are respectively communicated with the liquid inlets of the two-position two-way proportional valve (2) and the two-position three-way switch valve (3); the 2 working ports A, B are respectively communicated with the two-position three-way switch valve (3) and the working port of the two-position two-way proportional valve (2), and the liquid return port R is communicated with the liquid return port of the two-position three-way switch valve (3); the working ports A and B and the liquid return port R are provided with O-shaped sealing rings (10).
3. The pilot control valve group of the low-power-consumption driving type water-based proportional valve according to claim 2, wherein a proportional lever cavity v and a switch lever cavity w are arranged on the lever cavity end cover (11), a sealing groove is formed in the lever cavity end cover (11), the sealing groove is formed along the circumferential direction of the proportional lever cavity v, an ED sealing ring (5) is arranged in the sealing groove, and the lever cavity end cover (11) and the valve body (6) are sealed through the ED sealing ring (5).
4. The low-power-consumption driving type water-based proportional valve pilot control valve group according to claim 2, wherein the liquid distribution plate assembly (8) comprises a liquid distribution plate valve body (14), 2 fixed liquid resistances, a ball plug (15) and an O-shaped sealing ring (16); the 2 fixed liquid resistances are respectively a switch valve liquid inlet fixed liquid resistance (12) and a proportional valve liquid inlet fixed liquid resistance (13), and the 2 fixed liquid resistances are embedded and installed in the liquid distributing plate valve body (14); the liquid inlet fixed liquid resistor (12) of the switch valve is communicated with the liquid inlet P2, and the liquid inlet fixed liquid resistor (13) of the proportional valve is communicated with the liquid inlet P1; the ball plug (15) is arranged on one side of the liquid distribution plate valve body (14), a liquid inlet P is formed in the bottom end of the liquid distribution plate valve body (14), and the liquid inlet P is sealed through the O-shaped sealing ring (16).
5. The low-power-consumption driving type water-based proportional valve pilot control valve group according to claim 3, wherein the two-position three-way switching valve (3) comprises a two-position three-way valve core assembly (17), a switching amplifying lever assembly (20) and a mining book An Kaiguan electromagnet (18); the mining main body An Kaiguan electromagnet (18) and the two-position three-way valve core assembly (17) are inserted in the valve body (6) in the same direction, and the central axis of the mining main body An Kaiguan electromagnet (18) and the central axis of the two-position three-way valve core assembly (17) are both positioned in the same vertical plane; the mining book An Kaiguan electromagnet (18) is a dry electromagnet, and the mining book An Kaiguan electromagnet (18) is provided with a manual operation button (19).
6. The low power consumption driven type water-based proportional valve pilot control valve set according to claim 5, wherein the amplification ratio of the switch amplification lever assembly (20) is 10:1, and the switch amplification lever assembly (20) comprises a switch amplification lever (24), a rotation pin sleeve (23), a rotation pin (22) and an adjusting screw (21); the switch amplifying lever (24) is rotatably mounted on the valve body (6) through the rotating pin (22), the switch amplifying lever (24) is arranged in the switch lever cavity w, a fulcrum of the switch amplifying lever (24) is located between two stress points, and the two stress points of the switch amplifying lever (24) are respectively arranged corresponding to the mining main An Kaiguan electromagnet (18) and the two-position three-way valve core assembly (17).
7. A low power consumption driving type water-based proportional valve pilot control valve set according to claim 3, characterized in that the two-position two-way proportional valve (2) comprises a proportional valve core assembly (26), a proportional amplifying lever assembly (25) and a low power consumption proportional electromagnet; the low-power-consumption proportional electromagnet and the proportional valve core assembly (26) are inserted into the valve body (6) in the same direction, and the central axis of the low-power-consumption proportional electromagnet and the central axis of the proportional valve core assembly (26) are located in the same vertical plane.
8. The low power consumption driven water-based proportional valve pilot control valve set of claim 7, wherein the low power consumption proportional solenoid is a wet solenoid, the low power consumption proportional solenoid being driven by two sets of armature/solenoid coils; the low-power consumption proportional electromagnet comprises a pole shoe (27)/(36), a coil framework (29)/(37), a limiting piece (30), an armature (32)/(41), an electromagnetic push rod (44), a magnetism isolating ring (31)/(38), a pressure-resistant guide sleeve (34)/(40), an electromagnetic coil (33)/(39), a magnetism isolating plate (35), an adjusting spring (42), an adjusting screw (43) and an O-shaped static seal (28); two groups of the armatures/electromagnetic coils are separated by the magnetic separation plate (35); the magnetism isolating rings (31)/(38) are respectively welded in the pressure-resistant guide sleeve (34)/(40); the armatures (32)/(41) are respectively arranged in armature accommodating cavities e/f in the middle of the pressure-resistant guide sleeve (34)/(40), the armatures (32)/(41) are of a step structure, and the armatures (32)/(41) are connected with the electromagnetic push rod (44) through threads; one end of the electromagnetic push rod (44) is connected with the proportional amplifying lever assembly (25), and the other end of the electromagnetic push rod (44) is connected with the adjusting spring (42); the adjusting spring (42) is fixed through a boss of the electromagnetic push rod (44) and a groove in the adjusting screw (43); the pole shoes (27)/(36), the pressure-resistant guide sleeve (34)/(40) and the magnetism isolating plate (35) are welded and connected.
9. The low power consumption driven type water-based proportional valve pilot control valve set according to claim 8, wherein the amplification ratio of the proportional amplification lever assembly (25) is 5:1, and the proportional amplification lever assembly (25) comprises a proportional amplification lever (48), a rotation pin sleeve (46), a rotation pin (47) and an adjusting screw (45); the proportional amplifying lever (48) is rotatably mounted on the valve body (6) through the rotating pin (47), the proportional amplifying lever (48) is arranged in the switch lever cavity v, a fulcrum of the proportional amplifying lever (48) is positioned between two stress points, and the two stress points of the proportional amplifying lever (48) are respectively arranged corresponding to the proportional valve core assembly (26) and the electromagnetic push rod (44); the end surface of the electromagnetic push rod (44) contacted with the proportional amplifying lever (48) is a spherical surface.
10. The low power consumption driven water-based proportional valve pilot control valve set of claim 7, wherein the proportional valve spool assembly (26) comprises a proportional valve sleeve (53), a return spring (52), a proportional valve spool (50), a proportional valve seat (49), a dynamic seal (51), and a plurality of static seals (54); the proportional valve core (50) is arranged in a cavity formed by the proportional valve seat (49) and the proportional valve sleeve (53), the return spring (52) is arranged between the proportional valve core (50) and the proportional valve sleeve (53), and the return spring (52) is installed and positioned through a boss of the proportional valve core (50) and a blind hole of the proportional valve sleeve (53);
the proportional valve sleeve (53) is matched with the valve body (6) to form a liquid supply containing cavity x; the proportional valve seat (49), the proportional valve core (50) and the proportional valve sleeve (53) are matched to form a liquid inlet containing cavity s; the containing cavity where the return spring (52) is located is a spring cavity y; the proportional valve core (50) and the proportional valve seat (49) are matched to form 2 containing cavities, namely a leftmost push rod cavity z and a middle containing cavity t, and the containing cavity t is communicated with the working port B; working fluid of the low-power-consumption proportional electromagnet is filled in the armature accommodating cavity e/f through the liquid inlet P1, the accommodating cavity x, the runner i, the proportional lever cavity v and the runners m and n; the liquid inlet P1 is communicated with the liquid supply containing cavity x, the liquid inlet containing cavity s, the spring cavity y, the proportional lever cavity v and the push rod cavity z through the flow channel k, the flow channel h, the flow channel i and the flow channel j.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310871563.7A CN116696878B (en) | 2023-07-14 | 2023-07-14 | Low-power-consumption driving type water-based proportional valve pilot control valve group |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310871563.7A CN116696878B (en) | 2023-07-14 | 2023-07-14 | Low-power-consumption driving type water-based proportional valve pilot control valve group |
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| CN116696878B CN116696878B (en) | 2024-01-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116891014A (en) * | 2023-09-07 | 2023-10-17 | 太原科技大学 | Multimode unmanned aerial vehicle based on modularization |
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| CN116891014B (en) * | 2023-09-07 | 2023-11-14 | 太原科技大学 | Multimode unmanned aerial vehicle based on modularization |
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| CN116696878B (en) | 2024-01-23 |
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